Among the following gas generators, those that do not have the same functions as the Qipu generator

Today, with the continuous improvement of China's industrialization, every year due to the improper use of flammable and explosive, toxic and harmful gases or inadequate safety protection, there are endless news reports of accidents, which have caused different degrees of personnel and property losses, and seriously affected the production and operation activities and development of the enterprises concerned. Judging from the causes of these accidents, it is mainly caused by the incorrect use of flammable, explosive, toxic and harmful gases in the process of production and life, and at the same time, due to the lack of necessary safety protection measures, resulting in increased losses of personnel and property. Therefore, it is particularly important to install a gas detection and alarm system in places where there are flammable, explosive, toxic and harmful gases, so as to greatly reduce the loss of personnel and property, and even avoid accidents.

a. Solid and liquid can be separated, can control the occurrence and stop of reaction, and has the principle of Qipu generator, so A is wrong;

B. Solid and liquid can be separated, can control the occurrence and stop of reaction, and has the principle of Qipu generator, so B is wrong;

c. Solids and liquids cannot be separated, the occurrence and stop of the reaction cannot be controlled, and there is no Qipu generator principle, so C is correct;

d. Solid and liquid can be separated, can control the occurrence and stop of the reaction, and has the principle of Qipu generator, so D is wrong;

Therefore, C

H2S, CO2, H2 are all prepared by the reaction of bulk solid and liquid, and do not need to be heated, can use Qipu generator, laboratory with sodium sulfite and sulfuric acid to produce SO2, sodium sulfate is a powdered solid, so it can not be prepared with Qipu generator, so choose C

Air pressure can be applied at any time to separate the reflected solids and liquids so that the reflection stops immediately!

However, it should be noted that the solid and liquid of the reaction must be incompatible, and the gas must also be insoluble in the reaction solution!

For example, ZN and HCl produce hydrogen,,, which is commonly used in the laboratory to produce more hydrogen. It consists of three parts: a spherical funnel, a container, and a trachea.

For initial use, place the instrument horizontally, add the zinc particles through the mouth of the air duct on the container, then place the instrument in place, and then plug the plug containing the air duct. Dilute hydrochloric acid is then added through the spherical funnel mouth. When used, the piston of the air guide tube is twisted, and the acid flows from the spherical funnel to the bottom of the container, and then rises to the middle to contact the zinc particles and reacts, and the hydrogen gas produced is released from the air guide pipe (3).

When not in use, close the piston of the air duct, and the hydrogen gas generated by the continuous reaction in the container increases the pressure in the container, presses the acid back into the spherical funnel, so that the acid liquid is out of contact with the zinc particles, and the reaction stops by itself. It is very convenient to use the Qipu generator to produce hydrogen, and the occurrence or stop of the reaction can be controlled in time.

Open the piston, the pressure in the container is the same as the outside atmospheric pressure, and the dilute sulfuric acid in the spherical funnel flows into the container under the action of gravity, and comes into contact with the zinc particles to produce hydrogen; After the piston is closed, hydrogen is still generated because the acid continues to contact with the zinc particles, and the internal pressure of the container is stronger than the outside atmospheric pressure, and the pressure hydraulics the acid back to the spherical funnel, so that the acid is disengaged from the zinc particles, and the hydrogen is no longer generated.

I'm a copy party!

Generally, there are three kinds.

Zinc and dilute sulfuric acid to produce hydrogen.

Calcium carbonate and hydrochloric acid to carbon dioxide.

Ferrous sulfide and dilute sulfuric acid to hydrogen sulfide.

The conditions for the application of the Qipu generator are:

The reaction of bulk solid and liquid to produce gas does not need to be heated.

The chlorine gas mentioned upstairs, if it is to react with manganese dioxide and concentrated hydrochloric acid, it is not suitable to rent a group, because it needs to be heated.

If potassium permanganate reacts with concentrated hydrochloric acid, although it does not need to be heated, potassium permanganate is mostly in the form of source oak powder rather than lumps, so it is not suitable.

In the first figure, the circular perforated plastic plate is placed on the solid, the liquid is put into the long-neck funnel, the switch is turned on when the gas is prepared, the liquid flows down from the long-neck funnel, when it comes into contact with the solid placed on the plastic plate, the reaction begins, when the switch is turned off, because the gas produced can not be discharged, the gas pressure in the test tube is getting bigger and bigger, the liquid is pressed back into the long-neck funnel, separated from the solid, and the reaction will stop, so it can be opened and used with the shutdown and stop;

In the first figure, because the liquid is completely mixed with the solid, the liquid will not be pressed back into the long-neck funnel through the adjustment switch, and it cannot be turned on and off at any time;

In the first figure, the switch is turned on when the gas is prepared, because the pressure inside and outside the device is equal, the liquid drug will enter the device from the tube at the lower end, and the solid contact in the device, the reaction begins, when the switch is turned off, because the gas produced can not be discharged, the gas pressure in the test tube is getting bigger and bigger, and the liquid is pressed out from the nozzle at the lower end, which is the separation of liquid and solid, and the reaction stops, so it can be turned off and stopped with opening and use;

The first diagram is an error diagram and the gas cannot be discharged

Therefore, choose B

There is a partition in it, when the water stop clamp is opened, the solid-liquid contact, the reaction occurs; When the waterstop clamp is closed, with the increase of air pressure, part of the liquid is pressed into the long-neck funnel, so that the solid-liquid is separated and the reaction is stopped, so the purpose of making the reaction occur at any time and stop at any time can be realized;

When the water stop clamp is opened, the solid-liquid contact, the reaction occurs; But when the water stop clamp is closed, with the increase of air pressure, part of the liquid is pressed into the long-necked funnel, but all the liquid cannot be pressed into the long-necked funnel, the solid-liquid cannot be separated, and the reaction cannot be stopped, so the purpose of making the reaction occur at any time and stop at any time cannot be achieved;

The contact or separation of solid-liquid can be realized by putting the device into the beaker or taking it out, so as to achieve the purpose of making the reaction occur at any time and stop at any time;

When the water stop clamp is closed, although the air pressure in the test tube increases, the liquid and the solid cannot be separated, so the purpose of making the reaction occur at any time and stop at any time cannot be achieved;

When the water stop clamp is opened, the solid-liquid contact, the reaction occurs; When the water stop clamp is closed, with the increase of air pressure, the liquid is pressed into the left end of the U-shaped tube, so that the solid-liquid is separated and the reaction is stopped, so the purpose of making the reaction occur at any time and stop at any time can be realized;

So the option is: b

1 and 23 have high solubility and are easily soluble in water, and can't, 4 and 5 need to be heated, and can't.

A Qipu generator is a type of gas generator, also known as a Qili gas generator or hydrogen generator. It is often used in experiments to react solid particles with liquids to produce gases. A typical experiment is the production of hydrogen from dilute hydrochloric acid and zinc granules.

Hello! Hydrogen. 2. Carbon dioxide can be used with a Qipu generator.

When in doubt, please ask.

The Qipu generator is composed of three parts: a container, a spherical funnel and a trachea.

Energizers can only be used when lumpy solids are in contact with liquids and do not need to be heated to produce gases, such as hydrogen or carbon dioxide in laboratories.

The gas production with the Qipu generator is characterized by the fact that the start and stop of the reaction can be controlled at any time.

It is composed of three parts: a spherical funnel, a container and a trachea.

It is suitable for the reaction of bulk solid and liquid at room temperature to produce gas, such as hydrogen, hydrogen sulfide, etc.

Features: In line with the principle of "open and use, close and stop". It can save drugs, control the reaction rate and the occurrence and stop of reactions, and add drugs to the device at any time.

The spherical funnel, the container and the air duct are composed of three parts, and the solid and liquid react without heating, such as limestone and hydrochloric acid to prepare carbon dioxide. It is characterized by the use of atmospheric pressure, and the reaction process can be controlled.

1 hydrogen and 2 carbon dioxide can be used with a Qipu generator.